Evolution of microstructure and texture in the third generation Al–Li alloy AA2195 during warm hybrid processing

In the present study, the evolution of microstructure, crystallographic texture and their influence on mechanical properties of the Al–Li alloy, AA2195 has been studied. A novel hybrid processing route involving warm multi-axial forging (MAF) and subsequent warm rolling was employed. Different rolli...

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Bibliographic Details
Published in:Journal of alloys and compounds 2021-02, Vol.855, p.156750, Article 156750
Main Authors: Suresh, M., Kalsar, R., More, A.M., Bisht, A., Nayan, N., Suwas, S.
Format: Article
Language:English
Subjects:
Aluminum alloy
Aluminum base alloys
Aluminum-lithium alloys
Cross rolling
Crystallography
Evolution
Forging
Grain boundaries
Grain size
Mechanical properties
Microstructure
Precipitation hardening
Strengthening
Tensile properties
Texture
Warm rolling
Warm working
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Summary:In the present study, the evolution of microstructure, crystallographic texture and their influence on mechanical properties of the Al–Li alloy, AA2195 has been studied. A novel hybrid processing route involving warm multi-axial forging (MAF) and subsequent warm rolling was employed. Different rolling procedures were followed to obtain optimal microstructure and properties. The processing conditions significantly influenced the course of evolution of microstructure and texture. A variation in tensile properties as a function of angle from RD for the differently processed samples was noticed. The tensile properties were closer to isotropic case for the samples deformed using a combination of MAF with cross rolling. By controlling grain size and texture through optimal processing, it was possible to achieve isotropic tensile properties in the AA2195 alloy. The processing conditions have also led to enhancement in strength, which has been attributed to grain boundary strengthening, precipitation strengthening and dislocation strengthening. •A hybrid of severe plastic deformation and rolling leads to optimal microstructure and texture in the alloy AA2195.•The hybrid processed alloy exhibits a better combination of strength and ductility.•The hybrid processed alloy exhibit isotropy in mechanical behaviour.•Hybrid of severe plastic deformation and rolling renders the alloy AA2195 amenable to improved forming.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2020.156750